package com.ruoyi.web.util;

import java.io.*;

public class StreamUtils {
    public static byte[] readInputStream2ByteArray(InputStream inStream) throws IOException{
        ByteArrayOutputStream outStream = new ByteArrayOutputStream();
        byte[] buffer = new byte[1024];
        int len=0;
        while ((len=inStream.read(buffer))!=-1){
            outStream.write(buffer,0,len);
        }
        return outStream.toByteArray();
    }
    public static String readInputStream2String(InputStream inStream) throws IOException{
        ByteArrayOutputStream outStream = new ByteArrayOutputStream();
        byte[] buffer = new byte[1024];
        int len=0;
        while ((len=inStream.read(buffer))!=-1){
            outStream.write(buffer,0,len);
        }
        return outStream.toString();
    }
    public static File readInputStream2File(InputStream inStream ,File file) throws IOException{
        @SuppressWarnings("resource")
        FileOutputStream outStream = new FileOutputStream(file);
        byte[] buffer = new byte[1024];
        int len=0;
        while ((len=inStream.read(buffer))!=-1){
            outStream.write(buffer,0,len);
        }
        return file;
    }
    public static File readInputStream2File(InputStream inStream ,String filepath , String key) throws IOException{
        File file = File.createTempFile(filepath, key);
        return readInputStream2File(inStream ,file);

    }
}
